How to Use Java Assertions for Effective Debugging

In Java, "assert" is a keyword used to perform assertions, which are statements that help to ensure the correctness of your program. Assertions are typically used during development and testing to validate assumptions about the state of your program. When an assertion fails, an AssertionError is thrown, indicating that something unexpected has occurred.

This code demonstrates how to use "assert" in Java. In the example, we have a method called getAge that returns the age of a person with a given name. We use an assert statement to ensure that the age is within a valid range (0 to 120). If the age is outside this range, an AssertionError will be thrown with a custom error message.